Federal Mogul FP3901430 Connecting Rod Bearing Shell Standard Size

The Federal Mogul FP3901430 is a standard-size connecting rod bearing shell designed for Cummins C-Series diesel engines, including the 6C, 6CT, 6CTA, ISC, QSC, ISL, and QSL engine families displacing 8.3 liters. Sold and priced individually, a full engine set requires 12 shells to service all six cylinders.

Connecting rod bearing shells serve a critical function in engine operation — they link the crankshaft to the piston via the connecting rod, maintaining a precise oil film between the crankpin journal and the connecting rod bore to minimize friction and prevent metal-to-metal contact under load.

Key Features:

• Standard (STD) size — for use with unmachined, factory-specification crankshaft journals
• Manufactured to OEM specifications by Federal Mogul, a leading global engine bearing brand
• Designed for Cummins 6CT 8.3L turbocharged C-Series 6-cylinder diesel engines
• Compatible with heavy-duty truck, agricultural, marine, and industrial applications
• Sold per individual shell — order 12 for a complete engine set
• Cross-references OEM part numbers: 3901430, 3950661, 3966244, and Case IH A77563

Federal Mogul connecting rod bearings are engineered to meet stringent dimensional tolerances, ensuring proper crush height, oil clearance, and bore geometry for reliable, long-term engine performance. This part is suited for engine rebuilds and overhaul applications across a wide range of equipment platforms using the Cummins 8.3L C-Series engine.